Neither shall you swear by your head, because you can not make one hair white or black.
Nor by the earth; for it is his footstool: neither by Jerusalem; for it is the city of the great King.
But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these comes from evil.
Which of you by taking thought can add one cubit unto his stature?
And which of you with taking thought can add to his stature one cubit?